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crypto: stm32 - Forbid 2-key 3DES in FIPS mode 

This patch forbids the use of 2-key 3DES (K1 == K3) in FIPS mode.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Lionel Debieve<lionel.debieve@st.com>
Tested-by: Lionel Debieve<lionel.debieve@st.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu 2019-04-11 16:51:18 +08:00
parent 1ad2267cb6
commit beebb714e7
1 changed files with 11 additions and 4 deletions
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15
drivers/crypto/stm32/stm32-cryp.c
View File

@ -762,10 +762,17 @@ static int stm32_cryp_des_setkey(struct crypto_ablkcipher *tfm, const u8 *key,
static int stm32_cryp_tdes_setkey(struct crypto_ablkcipher *tfm, const u8 *key,
unsigned int keylen)
{
if (keylen != (3 * DES_KEY_SIZE))
return -EINVAL;
else
return stm32_cryp_setkey(tfm, key, keylen);
u32 flags;
int err;
flags = crypto_ablkcipher_get_flags(tfm);
err = __des3_verify_key(&flags, key);
if (unlikely(err)) {
crypto_ablkcipher_set_flags(tfm, flags);
return err;
}
return stm32_cryp_setkey(tfm, key, keylen);
}
static int stm32_cryp_aes_aead_setkey(struct crypto_aead *tfm, const u8 *key,